Ok so this might be an odd one but a few friends and I were discussing prepping for disasters and such and we came to the topic of keeping precious metal as a form of currency in a disaster. While I would love to horde gold, that's not at all possible on my income, however silve is and this is where two questions arise 1. Are any of ou already doing this and if so what are you doing it with? 2. What's an easy way to tell if something is really silver and not alpaca or some other silver knock-off?